Dental engine.



W. E; CLAYTON.

DENTAL ENGINE.

APPLICATION FILED MAY 29, 1913.

1,071,395, Patented Au .26,1913.

cnLuMBIAjLANDuRAPH C0" WASIIMN, D. c.

WOODFRED E. CLAYTON, OF LOSANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF TO T. C. LUTNESKY, 0F LOSANGELES, CALIFORNIA.

DENTAL ENGINE.

TON, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a certain new and useful Dental Engine, of which the following is a specification.

My invention relates to amachine for operating dental and other drills, and has for its object to provide a simple, cheap and efficient engine.

Other objects will appear from the following specification in connection with the accompanying drawing, in which,

Figure 1, is a front elevation showing my invention. Fig. 2, is a side elevation. Fig. 3, is a sectional plan taken on lines 33, Fig. 1. Fig. 4, is a fragmentary elevation illustrating a modified form. Fig. 5, is a sectional plan taken on lines 55, Fig. 1, and showing the controlling mechanism for the motor; and Fig. 6, is a fragmentary elevation showing the spring for holding the operating lever in normal position.

The invention comprises a standard 1, rising from a suitable base 2, and having at right angles thereto a shaft 3, on which is pivotally mounted a bar 4, having a reduced threaded end 5. On this reduced end 5, is arranged to be screwed or otherwise fastened a tube 6, for the reception of a rod 7, which carries a sheave 8, and which is adjustable in said tube, a set screw 9, serving to hold said rod in position of adjustment. In the lower end of said bar 4, is journaled a disk 10, and sheave 11, said sheave being in direct vertical alinement with the aforementioned sheave 8. A belt 12, running over said sheaves serves to transmit motion from the sheave 11, to the sheave 8. The disk 10, is normally in frictional engagement with and rotated by a disk 13, mounted on the shaft 14, of preferably an electric motor 15, a spring 16, connected to the bar 4, and the motor base 17, being used to insure such frictional engagement of the disk 10, with the disk 13. By moving the bar 4, and the disk 10, mounted thereon to the left or right of the center of the disk 13, by means presently described, reverse rotation of the disk 10, results. The bottom end of said bar 4, extends between the arms 19, of a bifurcated lever 20, pivotally mounted in a block 21, on said base 2, and arranged to Specification of Letters'iatent.

Application filed May-29, 1913.

Patented Aug. 26,1913.

Serial No. 770,767.

be moved bythe foot of the operator in either direction, which movement causes, as is obvious, .a movement of the disk 10, on the face of the disk 13. To bring the lever 20,

back to normal position, when released by the foot .of the operator, springs 22, are provided. These springs are coiled about a rod .23, mounted between the legs 24, of the standard 1, and extending through a slot 25, in the lever 20.

For effecting the control of the motor concurrently with the shifting of the disk 10, on the disk 13, a fork 26, is provided on the lever 20. Said fork is in engagement with the handle 27, of the current-controlling switch 28, which, as is clear,1noves with the lever 20. The contacts 29 and 30, on the motor base, are separated as seen, and when the lever 20, under the tension of the springs 22, is returned to normal position, the switch is returned between and free of the contacts 29 and 30, at which time the disk 10, will be in a direct central plane with that of the disk 13. The particular control of the motor switch as shown, illustrates only one method of accomplishing this end. The contacts may be disposed at any convenient points.

Fig. 4 illustrates a slightly modified form. The standard 1, and tube 6, in this modification are integral, but the bar 4, is pivotally connected to the tube.

Having heretofore referred to a dental engine, it is understood that the sheave 8, is connected to and operates a shaft which car ries a drill or other instrument.

Vhat I claim, is:

1. A dental engine comprising a standard, a bar pivotally mounted thereon, sheaves on said bar, a motor, a disk on said motor, a disk on said bar in engagement with said motor disk, one of said sheaves being connected with the disk on said bar, a belt connecting said sheaves, a means to move said bar to cause the disk thereon to move to the right or left of the center of said motor disk to govern .the direct-ion of rotation thereof.

2. A dental engine comprising a standard, a bar pivotally mounted thereon, a sheave on the upper end of said bar, a motor, a disk on said motor, a disk on said bar having a sheave, a belt connecting said sheave with said first named sheave, a lever to move said bar and its disk relatively to the center of said motor disk,and means to hold said lever normally in a plane central of said motor disk.

3. A dental engine comprising a standard, a bar pivotally mounted thereon, a sheave in the upper end of said bar, a motor, a disk on said motor, a disk on said bar, a sheave connected with said last named disk, means to hold said last named disk in engagement with said motor disk, a belt connecting said sheave with the first named sheave, a lever to move said bar and its disk relatively 'to the center of said motor disk to govern the direction of rotation of the disk on said bar, and spring means to hold said lever in normal position.

4. A dental engine comprising a standard, a bar pivotally mounted thereon, a sheave on the upper end of said bar, a motor, a disk on said motor, a disk on said bar and disposed normally centrally of and in engagement with said motor disk, a sheave attached to the disk of said bar and connected with said first named sheave by a belt, means to move said bar and thereby cause a movement of its disk relatively to the center of the motor disk, and means to control the motor.

5. A dental engine comprising a standard, a bar pivotally mounted thereon carrying sheaves, frictional means to operate one of said sheaves, a belt connecting said sheaves, and means to control said operating means.

In testimony whereof I afliX my signature in the presence of tWo witnesses.

VVOODFRED E. CLAYTON.

Witnesses:

ANTON GLOETZNER, Jr., E. L. STILWELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

